Absolutely continuous edge spectrum of topological insulators with an odd time-reversal symmetry

• URL: http://arxiv.org/abs/2203.05474v1
• Date: Thu, 10 Mar 2022 16:50:39 GMT
• Title: Absolutely continuous edge spectrum of topological insulators with an odd time-reversal symmetry
• Abstract summary: We show that non-trivial two-dimensional topological insulators protected by an odd time-reversal symmetry have absolutely continuous edge spectrum. The proof employs a time-reversal symmetric version of the Wold decomposition that singles out ballistic edge modes of the topological insulator.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We show that non-trivial two-dimensional topological insulators protected by an odd time-reversal symmetry have absolutely continuous edge spectrum. The proof employs a time-reversal symmetric version of the Wold decomposition that singles out ballistic edge modes of the topological insulator.

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